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Table 1 Subject characteristics for LBP and No-LBP groups

From: Ultrasound evidence of altered lumbar connective tissue structure in human subjects with chronic low back pain

  No-LBP (N = 47) LBP (N = 60) P value
Gender    
Male/Female (%) 43%/57% 42%/58% 0.93
Age (years) 39.3 ± 14.1 38.3 ± 13.3 0.72
BMI (units) 25.9 ± 0.7 25.7 ± 0.6 0.81
Physical activity level (%)*    0.87
   High 67% 62%  
   Moderate 26% 29%  
   Sedentary 8% 9%  
  1. Values represent Mean ± SD unless otherwise indicated.
  2. *Activity levels based on subjects that completed the survey (No-LBP N = 38, LBP N = 52).